Lock and latch.



No. 759,591. PATENTED-MAY 10, 1904.- A. M. CARRIER.

LOCK AND LATCH.

APPLIOATION FILED MAR. 25. 1902. RENEWED MAR. 17, 1904.

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No. 759,591. PATENTED MAY 10, 1904.

A. M. CARRIER. LOCK 'AND LATCH.

APPLICATION FILED MAR. 25, 1902. RENEWED MAR. 17, 1904.

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Patented May 10, 1904.

PATENT OFFICE.

ARTHUR M. CARRIER, OF FRUITVALE, CALIFORNIA.

LOCK AND LATCH.

SPECIFICATION forming part of Letters Patent No. 759,591, dated May 10, 1904.

Application filed March 25, 1902. Renewed March 17, 1904. Serial No. 198,661. (No model.)

and State of California, have invented new and useful Improvements in Mortise Locks and Latches, of which the following is a specification.

This invention relates to improvements made in door-locks of that class or description which are set into the woodwork and are usually provided with a latch as well as a bolt; and the improvements comprise certain novel -'construction of lock-casing, latch-controlling devices, and lock mechanism and the combination thereof in the production of a lock and latch, as hereinafter fully described and set forth.

In the following description, that explains at length the nature of my said improvements and the manner in which the same are applied and carried out, the accompanying drawings are referred'to by figures and letters.

Figure 1 of the drawlngs is a side view of a door-lock embodying my invention, showing the lock set into the edge of a door, a portion of the Woodwork immediately around the lock being represented in the figure with a portion broken away to partially expose the lock- Fig. 2 is a reversed or back view of the escutcheon removed from the door. -Fig. 3 is a side elevation of the lock before it is set, showing the sides of the latch-casing and boltcasing broken away or removed to expose the parts within. Fig. 4 is a rear view taken from the left side of Fig. 3, with the ends of the casing partly broken away. Fig. 5 is a cross-section at 5 5, Fig.3, and Fig. 6 a similar section at 6 6, Fi 3. Fig. 7 is a to 3 View of the latch, and Fig. 8 a top view of the lower one of the two slides in the latch-operating mechanism. Figs. 9, 10, and 11 are isometrical projections of the parts of the lock-casing in detail detached from the front plate, and

Fig. 12 a view of the front plate. Fig. 13 is a similar view of the bolt.

Fig. 14 is a similar projection of the partition-plate and the tumblers attached to it. Fig. 15 is a top view of the bolt, tumblers, and partition-plate sepa- Fig. 16 is an inverted plan of the same parts, showing the key in position for operating the tumblers and the bolt. Fig. 17 is a perspective view of the key. Figs. 18 and 19 are plan and elevation of the bit of the key.

The two casings a L are united to the front plate 0 in line with the apertures d 6, provided for the latchf and the bolt 9 to work through in that plate. The mechanism of the latch is inclosed in one casing, and the parts that operate the bolt are separately inclosed in the other casing. Each casing being of such form and size that it will fit a cylindrical hole in the woodwork is preferably formed of. a tube having flattened sides, with the top and bottom arched in order to afford space internally to accommodate the mechanism and at the same time bring the sides as closely together practicable. A tube of square or rectangular shape in cross-section could be used; but such. shape would require a circular hole of large diameter to be made in the woodwork to admit the tubular casing, if the square tube were to have the same internal dimensions vertically as the cylindrical tube.

On one side of the tubular lock-casing is a removable plate 22, which in the lock-casing Z) is returned at the rear end 23 to cover that end of the tube, whereby the end of the tube is uncovered for drawing out the internal mechanism whenever the plate 22 is removed; but in the other casing, containing the latch, the end may be permanently closed and not made a part of the removable plate.

The operating mechanism of the latch f 5 comprises two bars it /z., fitted to slide smoothly in the'casing on opposite sides of a spur-pinion a and having spur-teeth on their adjacent faces meshing with the teeth of the pinion. That part when rotated in one direction or the other moves the slides in opposite directions, one forward and the other backward, the result of which is to draw back the latch f no matter in which direction the rotation of the pinion takes place. A lug 3 on the forward end of each slide in line with and against or in close relation to a projection 2 on the tail end of the latch loosely connects the two slidebars with the latch and allows one bar to become disengaged from the latch as the other casing.

A spindle 6 extends through the hub of the pinion m and is provided with the usual knobs or handles on the ends for turning the pinion. One of the knobs is indicated by dotted lines in Fig. 1. The other is removed by reason of the spindle 0 being shown in section.

Where a night-latch is desired on this lock, to prevent the latch from being operated from the outside, I provide a locking device for that purpose that can be thrown on or off from the inside of the room by arranging a slide-plate 16 and a pivoted lever 17 in a recess in the back of the escutcheon-plate that contains the holes a and t for the latch-spindle and the key, so that their parts being confined between the escutcheonplate and the woodwork of the door have no communication with any of the apertures and cannot be reached from the outside. The lever 17 works on a pivot 19 and is attached at one end to the slide 16 and on its other end is provided with a finger-piece 20, projecting through a slot 21 in the escutcheon-plate. The slide 16 has a rectangular slot 21, corresponding in width to the thickness of the latch-spindle, so as to grasp the same, and the lever 17 is attached to the slide by astud 18, working in aslotin the lever.

The mechanism contained in the lower casing 6 is mounted on a removable plate .9, that divides the chamber in the tube vertically into two longitudinal compartments of about the same dimensions in height and breadth. That plate is fitted to slide in and out through the rear end of the casing when the side plate of the casing is taken off.

From its rear end to a point forward near the head the bolt f is divided into two legs or bars 6 6, having spaced notches 1 1 in the bottom edges to engage the bit of the key and also recesses 8 9 in the top edges to receive the tumblers 12, and the two legs or members, while being a part of the head of the bolt, are separated from each other, with their tuniblers, by the partition-plate, so that each leg and the tumbler that locks it works in a separate compartment. The legs 6 at their rear ends are united by a cross-pin 7, passing through a slot 26 in the partition for the purpose, chiefly, of preventing the legs from springing and keeping them in line. The slot being made equal in length to the throw of the bolt also serves as a stop to limit the throw in both directions. The tumblers r are pivotally attached by a pin 10 to the partition and are fitted to play up and down between the partition and the legs of the bolt, each tumbler having a turned lip or flange 12 to lie over the top edge of the leg. This lip performs the double office of locking the leg and of holding the tumbler in working position against the downward pull or strain of the spring 15. As thus constructed, it will be seen that the bolt is controlled by two separate tumblers, which are situated in different compartments of the casing and which act independently of each other, so that the bolt cannot be thrown unless both tumblers on opposite sides of the partition are raised simultaneously by the key.

The bit of the key w is divided by a cleft 28, corresponding in width to the thickness of the partitions, and both parts are united by the stem or shank, from which part they project on opposite sides and in the same plane. Each section has ribs or teeth 29 30 on the outer edge arranged equidistant from the shank, so as to move in the same circular path as the key is revolved in the lock. An intermediate tooth or rib 31 on the front face of the bit, extending from the outer end to the cleft 28, forms a stop that arrests the further movement of the key when the cleft is in line with the partition-plate at the time of inserting the key, and thereby insures the proper alinement of the bit to set the two parts for action on opposite sides of the partition. In addition to this function of a stop the middle projection 31 forms an intermediate tooth that engages the notch in the bottom edge of the leg 6 at the moment that the leading tooth on the outer edge of the bit working in the other compartment is disengaged from the leg in the revolution of the key, thus securing an even and continuous movement in either direction of its throw.

As thus constructed it will be seen that a lock of this character with tubular casings can be set in a door in much less time than a mortise-lock with a single casing of rectangular shape for the reason that no mortising is required, and instead of boring siX holes and then using the chisel it is only necessary in setting my lock to bore two holes at proper distance apart to admit the latch-casing and the lock-casing and then cut cross-apertures for the knob-spindle and the keyhole.

Having thus fully described my invention, what I claim as new therein, and desire to secure by Letters Patent, is

1. A combined lock and latch, comprising a casing having two separate tubular inclosures united rigidly to a common rim, an aperture in the rim in line with each tubular inclosure; a sleeve rotatably mounted in one tubular inclosure transversely thereof and having a rectangular aperture for a latch-spindle; a' slidable latch-piece, and mechanism operativelyconnecting the latch-piece with the rotatable sleeve, said latch-piece and operating mechan- IIO ism being wholly incased by said tubular inclosure; and a slidable bolt and lock mechanism wholly incased in the other tubular inclosure and comprising a stationary partitionplate dividing the tubular inclosure longitudinally; a slidable bolt slotted longitudinally and having a member fitted to slide in each compartment; a tumbler pivotally attached to the bolt member in each casing said tumblers being adapted to operate separately of each other; key-apertures in the sides of the tubular inclosure incasing the lock mechanism, and a key-aperture in the fixed partitionplate in line therewith; and a key having separate bits adapted to operate simultaneously on the tumblers on opposite sides of the partition-plate.

2. In a mortise-lock, the combination of a casing comprising a rim having an aperture for a bolt and a tubular inclosure rigidly fixed to the rim in line with the said aperture and adapted to wholly inclose the lock mechanism, a stationary partition-plate dividing the tubular inclosure longitudinally into two cl1ambers, a slidable bolt having two parallel members fitted to slide in said chambers and separated from each other by the partitioirplate, a tumbler pivotally attached to each bolt member, and catches in the bolt-chamber with which the tumbler therein engages to lock the bolt, key-a1:)ertures in the sides of the tubular inclosure, and akeyhole in the partition-plate in line with said apertures.

3. In a mortise-lock, the combination of a tubular casing, a partition-plate dividing said casing longitudinally into two chambers, and a bolt and tumblers operatively mounted on and separated from each other by the pdl'ilh tion-plate, whereby the lock mechanism is wholly removable by withdrawing the partition-plate, said plate having an aperture for a key and through which the tumblers in both chambers are operated simultaneously from the same side of the lock.

4. In a mortise-lock, the combination of a tubular easing, a partition-plate dividing said casing longitudinally and removable through the end of the casing and having a bolt and tumblers operatively mounted on the plate, whereby said parts are removable by withdrawing the plate from the casing.

5. In a mortise-lock, the combination of a tubular casing, a removable partition-plate therein dividing the casing longitudinally into separate compartments, a bolt having a bifurcated rear portion comprising parallel legs, tumblers pivotally mounted on opposite sides of the partition-plate and a key-aperture in said plate.

6. In a mortise-lock, the combination of a tubular casing having a bolt-slot in one end, an opening in the opposite end and a removable plate closing said opening; a partitionplate fitted to said casing to divide the same longitudinally into two separate chambers and removable therefrom through the end of the casing; a slidable bolt having a bifurcated rear portion comprising a separate leg to each chamber, a tumbler in each chamber pivotally attached to the partition-plate and adapted to separately control the leg in its chamber on the same side of the plate; a key-aperture in the partition-plate and a key fitted thereto having a divided bit the members whereof are adapted to engage the tumblers on opposite sides of the partition-plate and simultaneously operate them.

In testimony whereof I. have signed my name in the presence of two subscribing witnesses.

ARTHUR M. CARRIER.

l/Vitnesses:

I'IARRY J. LASK, EDWARD E. ()snoRN. 

